Pyrotechnic composition for producing brown smoke



Patented Oct. 2, 1934 STAES PYROTECHNIC COMPOSITION FOR PRO- DUCING BROWN SMOKE George U. Graff,

Washington, D. C.

No Drawing. Application January 18, 1933, Serial No. 652,427

1 Claim.

(Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) This invention relates to a pyrotechnic material for producing brown smoke and has for its object to provide a composition that will evolve an abundance of deeply colored smoke of the color specified.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts as will be described more fully hereinafter.

A composition well adapted to produce brown smoke is copper oxide 50 parts, lead peroxide 35 parts, and magnesium 15 parts.

The substance specified gives off puffs of brown smoke that are particularly adapted for use in daylight fireworks and various daylight signaling devices, though the application of this invention is not limited to the purposes specified.

It is to be understood that the proportions specified for the several ingredients represent the preferred percentages for each combination but that strict adherence thereto is not essential, as good results are obtained even when they are varied Within considerable limits.

The herein described invention may be manufactured and used by or for the Government of the United States for governmental purposes Without the payment of any royalty thereon.

I claim:

A pyrotechnic composition for producing brown smoke, comprising copper oxide 50 parts, lead peroxide 35 parts, and magnesium 15 parts.

GEORGE U. GRAFF. 

